Overview

Features and Benefits

  • Simultaneously Monitor Four Power Supplies
  • ±0.5% Threshold Accuracy Over Temperature
  • Selectable −4% and −6% Thresholds per Supply:
    5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1V and ±ADJ
  • Adjustable Reset (RST) Timeout
  • Overvoltage and Negative Voltage Monitoring
  • Push-Pull or Open-Drain RST Output
  • Margin Pin RDIS for Reset Disable
  • H-Grade Temperature Range
  • Individual Comparator Open-drain Outputs
  • 20-Lead 3mm × 4mm QFN

Product Details

The LTC2962 series of configurable power supply monitors can supervise systems with up to four supply voltages. One of 16 preset or adjustable voltage monitor thresholds per channel can be selected using external 1% resistors connected to the programming (PG) inputs. The preset voltage thresholds are accurate to ±0.5% over temperature. Positive (+ADJ) and negative (−ADJ) adjustable inputs with a 0.5V threshold allow undervoltage, negative voltage and overvoltage monitoring.

The watchdog (LTC2963 only) and reset timeout periods are adjustable using external capacitors. Accurate voltage thresholds and comparator glitch immunity ensure reliable reset operation without false triggering. The RST output is guaranteed to be in the correct state for VCC input voltage down to 1V.

The flexibility of the LTC2962 family provides the ability to monitor a wide variety of power supply combinations, including multiple supplies of the same voltage, with ±0.5% accuracy.

Applications

  • High Reliability Systems
  • Network, Telecom and Server Systems
  • Automotive Control Systems

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

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